iOS10推送开发

• iOS10推送授权

[[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionCarPlay completionHandler:^(BOOL granted, NSError * _Nullable error) {
    // 异步回调,不会阻塞UI
    if (granted)
    {
        //授权成功
    }
    
    if (!granted || error)
    {
        //授权失败
    }
}];```

* 获取授权结果,这样方便以后我们定制推送信息展现方式

```sh
[[UNUserNotificationCenter currentNotificationCenter]  getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
}];

UNNotificationSettings属性

UNAuthorizationStatus authorizationStatus;

UNNotificationSetting soundSetting __TVOS_PROHIBITED;
UNNotificationSetting badgeSetting __WATCHOS_PROHIBITED;
UNNotificationSetting alertSetting __TVOS_PROHIBITED;

UNNotificationSetting notificationCenterSetting __TVOS_PROHIBITED;
UNNotificationSetting lockScreenSetting __TVOS_PROHIBITED __WATCHOS_PROHIBITED;
UNNotificationSetting carPlaySetting __TVOS_PROHIBITED __WATCHOS_PROHIBITED;

UNAlertStyle alertStyle;

• iOS10本地推送示例
• 定义推送

// 推送内容,其中UNMutableNotificationContent 和10以前的UILocalNotification作用类似
UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init];
content.title = [NSString localizedUserNotificationStringForKey:@"title" arguments:nil];
content.body = [NSString localizedUserNotificationStringForKey:@"body"                                        arguments:nil];
content.sound = [UNNotificationSound defaultSound];
// 定义触发推送的触发器
UNTimeIntervalNotificationTrigger* trigger = [UNTimeIntervalNotificationTrigger
                                                      triggerWithTimeInterval:3 repeats:NO];
// 还有一些其它的触发器可以在官网查看,接下来发送推送
UNNotificationRequest* request = [UNNotificationRequest requestWithIdentifier:@"FiveSecondIdentifier"
                                                                              content:content trigger:trigger];
UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];
center.delegate = self;
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
        NSLog(@"推送请求处理完毕");
}];

以上就是一个简答的本地推送示例

• iOS10处理推送过来的消息
  值得一提的是,iOS10容许应用在前台的情况下,展现推送信息,以前当我们应用在前台如果来了一个推送,一般都是一个AlertView供用户选择查看,不过在iOS10以后,推送可以在前端展示,不过需要实现如下的代理,并加入枚举值
  UNNotificationPresentationOptionAlert

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
{
    // last involve
    completionHandler( UNNotificationPresentationOptionSound | UNNotificationPresentationOptionAlert | UNNotificationPresentationOptionBadge);
}

这个消息仅应用在前台的时候会显示,当我们点击这个推送本身,或者,点击推送下面的action按钮,将会触发下面的代理方法

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler
{
    completionHandler();
}

你可以根据推送的response如何处理这个点击事件

iOS10推送新特性

• iOS10容许携带多媒体信息,比如图片,视频,这个特性,是由一个UNNotificationAttachment类实现的,下面是一个携带图片的示例

IMG_3196.PNG

当我们下拉,或者使用 3Dtouch功能,推送会变成这样

IMG_3197.PNG

以下是完整的代码

UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init];
content.title = [NSString localizedUserNotificationStringForKey:@"套路" arguments:nil];
content.body = [NSString localizedUserNotificationStringForKey:@"编程就是个套路!"
                                                     arguments:nil];
content.categoryIdentifier = @"categoryIdentifier";
content.sound = [UNNotificationSound defaultSound];

NSURL * url = [[NSBundle mainBundle] URLForResource:@"IMG_3162" withExtension:@"png"];
UNNotificationAttachment * attach = [UNNotificationAttachment attachmentWithIdentifier:@"attachmentWithIdentifier" URL:url options:nil error:nil];
content.attachments = @[attach];

// Deliver the notification in five seconds.
UNTimeIntervalNotificationTrigger* trigger = [UNTimeIntervalNotificationTrigger
                                              triggerWithTimeInterval:3 repeats:NO];
UNNotificationRequest* request = [UNNotificationRequest requestWithIdentifier:@"FiveSecond"
                                                                      content:content trigger:trigger];

UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];
center.delegate = self;
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
    NSLog(@"推送处理完毕");
}];

UNTextInputNotificationAction * textAction = [UNTextInputNotificationAction actionWithIdentifier:@"FiveSecond" title:@"评论" options:UNNotificationActionOptionForeground textInputButtonTitle:@"评论" textInputPlaceholder:@"占位文字"];

UNNotificationAction * action2 = [UNNotificationAction actionWithIdentifier:@"cancel" title:@"删除" options:UNNotificationActionOptionDestructive];

UNNotificationCategory * identify = [UNNotificationCategory categoryWithIdentifier:@"categoryIdentifier" actions:@[textAction,action2] intentIdentifiers:@[] options:UNNotificationCategoryOptionAllowInCarPlay];
[center setNotificationCategories:[NSSet setWithObject:identify]];

注意: 这是当应用在前台的时候显示的,所以要实现上面的协议

• 上面的推送时本地的,如果是远程推送的话,需要实现搭建以下APP Extend来实现多媒体推送

BF531B98-5382-4561-A170-6CE9B0BD02CB.png

假设如你的推送信息如下
{
  "aps":{
    "alert":{
      "title":"多媒体携带图片显示",
      "body":"会将图片下载下来,在现实这个通知"
    },
    "mutable-content":1
  },
  "image": "http://pic6.huitu.com/res/20130116/84481_20130116142820494200_1.jpg"
}

那么考虑到推送过来的信息仅仅只有一个图片的链接,地址,该如何显示,幸运的是iOS10通过Server Extend可以拦截推送过来的信息,在收到这种需要进一步处理的推送信息,系统有个30s钟的时间给你处理,处理的函数在你新建的Server Extend NotificationService类的以下方法中

- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
    self.contentHandler = contentHandler;
    self.bestAttemptContent = [request.content mutableCopy];
    
    // 此处做一些你对这个推送想要做的一些更改,比如根据图片链接下载图片...
    self.bestAttemptContent.title = [NSString stringWithFormat:@"%@ [modified]", self.bestAttemptContent.title];
    // 这句话一定要在你加工完毕推送信息后调用
    self.contentHandler(self.bestAttemptContent);
}

如果30s以后仍然没有加工完毕,怎么办?苹果给了我们一个一个补救办法

- (void)serviceExtensionTimeWillExpire {
    // Called just before the extension will be terminated by the system.
    // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
    self.contentHandler(self.bestAttemptContent);
}

通过这个方法,我们可以做一些简单的修改,或者直接显示原本的推送内容

那么如何触发这样的推送消息
推送消息中要携带"mutable-content":1告诉系统,这个推送需要进一步加工

未完...